Optimization method of manufacturing for diamond turning soft-brittle materials’ harmonic diffractive optical elements

Xiang Gao; Changxi Xue; Yang Chao; Yue Liu

doi:10.1364/AO.411706

Applied Optics
Vol. 60,
Issue 1,
pp. 162-171
(2021)
•https://doi.org/10.1364/AO.411706

Optimization method of manufacturing for diamond turning soft-brittle materials’ harmonic diffractive optical elements

Xiang Gao, Changxi Xue, Yang Chao, and Yue Liu

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Xiang Gao, Changxi Xue, Yang Chao, and Yue Liu, "Optimization method of manufacturing for diamond turning soft-brittle materials’ harmonic diffractive optical elements," Appl. Opt. 60, 162-171 (2021)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article
Editors' Pick

Check for updates

Abstract

Single-point diamond turning is a high-efficiency, low-cost method for manufacturing harmonic diffractive optical elements (HDOEs). Generally, in order to ensure high diffraction efficiency of HDOEs, a half-round tool is used to reduce surface-relief profile errors and a super small feed rate is selected to control surface roughness when hard-brittle materials are turning. However, this method is no longer suitable for soft-brittle materials, which have a strict requirement for the range of the feed rate. It limits the types of materials available for HDOEs. Therefore, according to the range of the feed rate and the cutting depth for soft-brittle materials, an optimized turning model is proposed in this paper. It overcomes the high surface roughness caused by the half-round tool; meanwhile, the advantage of the half-round tool is kept in terms of surface-relief profile errors. On this basis, a mathematical model is proposed to reveal the relationship among diffraction efficiency, period widths, tool radius, and feed rate with different soft-brittle optical materials. As a typical soft-brittle material, barium fluoride (${\rm BaF}_2$) was selected to be the material for manufacturing HDOEs. By using the optimized model, the turning experiment of ${\rm BaF}_2$ HDOEs was completed, and then the ${\rm BaF}_2$ HDOEs with ${\rm Ra} = 2.75\;{\rm nm}$ were obtained. The optimized model is verified to be effective and further provides theory guidance and engineering application in the optical manufactory field of soft-brittle materials for HDOEs. The range of application materials for HDOEs is enriched, and the freedom of advanced optical design is broadened.

Full Article | PDF Article

More Like This

Diffraction efficiency evaluation for diamond turning of harmonic diffractive optical elements

Peng Zhou, Changxi Xue, Chao Yang, Chang Liu, and Xingguo Liu
Appl. Opt. 59(6) 1537-1544 (2020)

Roughness model of an optical surface in ultrasonic assisted diamond turning

Yintian Xing, Yue Liu, Chao Yang, and Changxi Xue
Appl. Opt. 59(31) 9722-9734 (2020)

Single-point diamond turning and replication of visible and near-infrared diffractive optical elements

C. Gary Blough, M. Rossi, Stephen K. Mack, and Robert L. Michaels
Appl. Opt. 36(20) 4648-4654 (1997)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (19)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Crystal Properties	Ge	Si	ZnS	ZnSe	${B a F}_{2}$
Transmittance at 4 µm/10 µm (%)	47/44	54/20	54/70	72/70	92/85
Thermo-optic coefficient ( $10^{- 6} /^{\circ} C$ )	277	160	38.7	61	−15.2
Knoop hardness ( $k g / {m m}^{2}$ )	780	1100	225	112	82
Young’s modulus (GPa)	102.7	130.9	74.5	67.2	53.1

	$T = 200 µ m$		$T = 300 µ m$		$T = 400 µ m$		$T = 500 µ m$
f (µm/r)	$R_{T}$ (µm)	$η_{max}$ (%)	$R_{T}$ (µm)	$η_{max}$ (%)	$R_{T}$ (µm)	$η_{max}$ (%)	$R_{T}$ (µm)	$η_{max}$ (%)
3.5	33	91.4	54	98.1	83	99.2	117	99.8
4	38	87.4	59	97.2	88	98.9	123	99.4
4.5	42	82.9	64	95.9	93	98.4	129	99.2
5	46	77.8	69	94.4	99	97.8	135	98.9
5.5	51	72.0	74	92.7	105	97.1	141	98.5

Crystal Properties	Ge	Si	ZnS	ZnSe	${B a F}_{2}$
Transmittance at 4 µm/10 µm (%)	47/44	54/20	54/70	72/70	92/85
Thermo-optic coefficient ( $10^{- 6} /^{\circ} C$ )	277	160	38.7	61	−15.2
Knoop hardness ( $k g / {m m}^{2}$ )	780	1100	225	112	82
Young’s modulus (GPa)	102.7	130.9	74.5	67.2	53.1

	$T = 200 µ m$		$T = 300 µ m$		$T = 400 µ m$		$T = 500 µ m$
f (µm/r)	$R_{T}$ (µm)	$η_{max}$ (%)	$R_{T}$ (µm)	$η_{max}$ (%)	$R_{T}$ (µm)	$η_{max}$ (%)	$R_{T}$ (µm)	$η_{max}$ (%)
3.5	33	91.4	54	98.1	83	99.2	117	99.8
4	38	87.4	59	97.2	88	98.9	123	99.4
4.5	42	82.9	64	95.9	93	98.4	129	99.2
5	46	77.8	69	94.4	99	97.8	135	98.9
5.5	51	72.0	74	92.7	105	97.1	141	98.5

Abstract

Cited By

Figures (13)

Tables (2)

Equations (19)

Applied Optics